Regulatory Text: 
Louisiana Administrative Code, Title 33 ENVIRONMENTAL QUALITY, Part III Air (LAC 33:III)

Chapter 13.  Emission Standards for Particulate Matter

Subchapter A. General

Section 1303.  Provisions Governing Specific Activities
As approved by EPA July 5, 2011 (76 FR 38977) effective August 4, 2011 (LAd34) LA021.
Regulations.gov docket EPA-R06-OAR-2007-0924

Unless otherwise indicated, paragraphs are as previously approved by EPA 03/08/89 (54 FR 09795) effective 05/08/89 (LAc49) and 06/15/89 effective 08/14/89 (LAc50).

AQ125   §1303.A; LAd34; LA021.03; AQ125; LR21:1080(10/20/1995)
   A. Toxic Substances. Substances which are by nature toxic to 
human or animal life or vegetation may be controlled to more 
restrictive levels than is required for particulate matter in general.

   B.  Impairment of Visibility. The emissions which pass onto or across a public road and create a traffic hazard by impairment of visibility or intensify an existing traffic hazard condition are prohibited.